1 //===--- CreateInvocationFromCommandLine.cpp - CompilerInvocation from Args ==// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // Construct a compiler invocation object for command line driver arguments 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "clang/Frontend/Utils.h" 15 #include "clang/Frontend/CompilerInstance.h" 16 #include "clang/Frontend/DiagnosticOptions.h" 17 #include "clang/Frontend/FrontendDiagnostic.h" 18 #include "clang/Driver/Compilation.h" 19 #include "clang/Driver/Driver.h" 20 #include "clang/Driver/ArgList.h" 21 #include "clang/Driver/Options.h" 22 #include "clang/Driver/Tool.h" 23 #include "llvm/Support/Host.h" 24 using namespace clang; 25 26 /// createInvocationFromCommandLine - Construct a compiler invocation object for 27 /// a command line argument vector. 28 /// 29 /// \return A CompilerInvocation, or 0 if none was built for the given 30 /// argument vector. 31 CompilerInvocation * 32 clang::createInvocationFromCommandLine(ArrayRef<const char *> ArgList, 33 IntrusiveRefCntPtr<DiagnosticsEngine> Diags) { 34 if (!Diags.getPtr()) { 35 // No diagnostics engine was provided, so create our own diagnostics object 36 // with the default options. 37 DiagnosticOptions DiagOpts; 38 Diags = CompilerInstance::createDiagnostics(DiagOpts, ArgList.size(), 39 ArgList.begin()); 40 } 41 42 SmallVector<const char *, 16> Args; 43 Args.push_back("<clang>"); // FIXME: Remove dummy argument. 44 Args.insert(Args.end(), ArgList.begin(), ArgList.end()); 45 46 // FIXME: Find a cleaner way to force the driver into restricted modes. We 47 // also want to force it to use clang. 48 Args.push_back("-fsyntax-only"); 49 50 // FIXME: We shouldn't have to pass in the path info. 51 driver::Driver TheDriver("clang", llvm::sys::getDefaultTargetTriple(), 52 "a.out", false, *Diags); 53 54 // Don't check that inputs exist, they may have been remapped. 55 TheDriver.setCheckInputsExist(false); 56 57 OwningPtr<driver::Compilation> C(TheDriver.BuildCompilation(Args)); 58 59 // Just print the cc1 options if -### was present. 60 if (C->getArgs().hasArg(driver::options::OPT__HASH_HASH_HASH)) { 61 C->PrintJob(llvm::errs(), C->getJobs(), "\n", true); 62 return 0; 63 } 64 65 // We expect to get back exactly one command job, if we didn't something 66 // failed. 67 const driver::JobList &Jobs = C->getJobs(); 68 if (Jobs.size() != 1 || !isa<driver::Command>(*Jobs.begin())) { 69 SmallString<256> Msg; 70 llvm::raw_svector_ostream OS(Msg); 71 C->PrintJob(OS, C->getJobs(), "; ", true); 72 Diags->Report(diag::err_fe_expected_compiler_job) << OS.str(); 73 return 0; 74 } 75 76 const driver::Command *Cmd = cast<driver::Command>(*Jobs.begin()); 77 if (StringRef(Cmd->getCreator().getName()) != "clang") { 78 Diags->Report(diag::err_fe_expected_clang_command); 79 return 0; 80 } 81 82 const driver::ArgStringList &CCArgs = Cmd->getArguments(); 83 OwningPtr<CompilerInvocation> CI(new CompilerInvocation()); 84 if (!CompilerInvocation::CreateFromArgs(*CI, 85 const_cast<const char **>(CCArgs.data()), 86 const_cast<const char **>(CCArgs.data()) + 87 CCArgs.size(), 88 *Diags)) 89 return 0; 90 return CI.take(); 91 } 92
